Index: media/formats/mp4/hevc.h |
diff --git a/media/formats/mp4/hevc.h b/media/formats/mp4/hevc.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..06974c0dfd1209e59900179e831a7349c43d9acd |
--- /dev/null |
+++ b/media/formats/mp4/hevc.h |
@@ -0,0 +1,106 @@ |
+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef MEDIA_FORMATS_MP4_HEVC_H_ |
+#define MEDIA_FORMATS_MP4_HEVC_H_ |
+ |
+#include <vector> |
+ |
+#include "base/basictypes.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "media/base/media_export.h" |
+#include "media/formats/mp4/bitstream_converter.h" |
+#include "media/formats/mp4/box_definitions.h" |
+ |
+namespace media { |
+ |
+struct SubsampleEntry; |
+ |
+namespace mp4 { |
+ |
+struct MEDIA_EXPORT HEVCDecoderConfigurationRecord : Box { |
+ DECLARE_BOX_METHODS(HEVCDecoderConfigurationRecord); |
+ |
+ // Parses HEVCDecoderConfigurationRecord data encoded in |data|. |
+ // Note: This method is intended to parse data outside the MP4StreamParser |
+ // context and therefore the box header is not expected to be present |
+ // in |data|. |
+ // Returns true if |data| was successfully parsed. |
+ bool Parse(const uint8* data, int data_size); |
+ |
+ uint8 configurationVersion; |
+ uint8 general_profile_space; |
+ uint8 general_tier_flag; |
+ uint8 general_profile_idc; |
+ uint32 general_profile_compatibility_flags; |
+ uint64 general_constraint_indicator_flags; |
+ uint8 general_level_idc; |
+ uint16 min_spatial_segmentation_idc; |
+ uint8 parallelismType; |
+ uint8 chromaFormat; |
+ uint8 bitDepthLumaMinus8; |
+ uint8 bitDepthChromaMinus8; |
+ uint16 avgFrameRate; |
+ uint8 constantFrameRate; |
+ uint8 numTemporalLayers; |
+ uint8 temporalIdNested; |
+ uint8 lengthSizeMinusOne; |
+ uint8 numOfArrays; |
+ |
+ typedef std::vector<uint8> HVCCNALUnit; |
+ struct HVCCNALArray { |
+ HVCCNALArray(); |
+ ~HVCCNALArray(); |
+ uint8 first_byte; |
+ std::vector<HVCCNALUnit> units; |
+ }; |
+ std::vector<HVCCNALArray> arrays; |
+ |
+ private: |
+ bool ParseInternal(BufferReader* reader, |
+ const scoped_refptr<MediaLog>& media_log); |
+}; |
+ |
+class MEDIA_EXPORT HEVC { |
+ public: |
+ static bool ConvertConfigToAnnexB( |
+ const HEVCDecoderConfigurationRecord& hevc_config, |
+ std::vector<uint8>* buffer); |
+ |
+ static bool InsertParamSetsAnnexB( |
+ const HEVCDecoderConfigurationRecord& hevc_config, |
+ std::vector<uint8>* buffer, |
+ std::vector<SubsampleEntry>* subsamples); |
+ |
+ // Verifies that the contents of |buffer| conform to |
+ // Section 7.4.2.4.4 of ISO/IEC 23008-2. |
+ // |subsamples| contains the information about what parts of the buffer are |
+ // encrypted and which parts are clear. |
+ // Returns true if |buffer| contains conformant Annex B data |
+ // TODO(servolk): Remove the std::vector version when we can use, |
+ // C++11's std::vector<T>::data() method. |
+ static bool IsValidAnnexB(const std::vector<uint8>& buffer, |
+ const std::vector<SubsampleEntry>& subsamples); |
+ static bool IsValidAnnexB(const uint8* buffer, size_t size, |
+ const std::vector<SubsampleEntry>& subsamples); |
+}; |
+ |
+class HEVCBitstreamConverter : public BitstreamConverter { |
+ public: |
+ explicit HEVCBitstreamConverter( |
+ scoped_ptr<HEVCDecoderConfigurationRecord> hevc_config); |
+ |
+ // BitstreamConverter interface |
+ bool ConvertFrame(std::vector<uint8>* frame_buf, |
+ bool is_keyframe, |
+ std::vector<SubsampleEntry>* subsamples) const override; |
+ private: |
+ ~HEVCBitstreamConverter() override; |
+ scoped_ptr<HEVCDecoderConfigurationRecord> hevc_config_; |
+}; |
+ |
+} // namespace mp4 |
+} // namespace media |
+ |
+#endif // MEDIA_FORMATS_MP4_HEVC_H_ |